摘要： Photomechanical materials can directly transform light energy into mechanical movements that provide mechanical devices with many advantages, such as non‐contact, remote control, and spatiotemporal resolution. In the past decades, a variety of photoresponsive materials have been developed, and the system based on liquid crystalline polymers (LCPs) is one of the most fascinating ones from the viewpoint of applications as soft photoactuators. However, a simple‐component material system sometimes develops into a bottleneck, such as difficulty in the realization of multiwavelength responsiveness or the flexibility of fabrication. Recently, nanocomposite materials, which combine the superiority of both organic and inorganic materials, have shown more and more potential in photomechanical researches. It is necessary to summarize the recent progresses made with reference to photomechanical soft nanocomposites. In this chapter, we will mainly discuss their design strategy, fabrication, operating principle, and potential applications.